linux-kernel - [PATCH 0/4] iommu/amd: Force SNP-enabled VFIO domain to 4K page size

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230110143137.54517-1-suravee.suthikulpanit@amd.com>
Date:   Tue, 10 Jan 2023 08:31:33 -0600
From:   Suravee Suthikulpanit <suravee.suthikulpanit@....com>
To:     <linux-kernel@...r.kernel.org>, <iommu@...ts.linux.dev>
CC:     <joro@...tes.org>, <robin.murphy@....com>, <ashish.kalra@....com>,
        <thomas.lendacky@....com>, <vasant.hegde@....com>,
        <jon.grimm@....com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>
Subject: [PATCH 0/4] iommu/amd: Force SNP-enabled VFIO domain to 4K page size

To support VFIO pass-through device with SNP-enabled guest, IOMMU needs to
setup IOMMU page table with matching page size to the RMP. In order for
the IOMMU driver to setup page table appropriately, it needs to determine:

1. If an IOMMU domain is a VFIO domain (PATCH 1)
2. If an IOMMU domain belongs to an SNP-enabled guest (PATCH 2,3)
3. Appropriate page size the IOMMU domain (PATCH 4)

Please note that patch 2/4 is a preparatory patch for an upcoming series
to support SNP, which implements the call-back for the struct
amd_iommu_svm_ops.is_snp_guest().

Best Regards,
Suravee

Suravee Suthikulpanit (4):
  iommu/amd: Introduce Protection-domain flag VFIO
  iommu/amd: Introduce structure amd_iommu_svm_ops.is_snp_guest()
  iommu: Introduce IOMMU call-back for processing struct KVM assigned to
    VFIO
  iommu/amd: Force SNP-enabled VFIO domain to 4K page size

 drivers/iommu/amd/amd_iommu_types.h |  3 ++
 drivers/iommu/amd/iommu.c           | 45 +++++++++++++++++++++++++++--
 drivers/iommu/iommu.c               | 10 +++++++
 drivers/vfio/vfio_main.c            |  1 +
 include/linux/amd-iommu.h           |  6 ++++
 include/linux/iommu.h               |  4 +++
 6 files changed, 67 insertions(+), 2 deletions(-)

-- 
2.32.0